In physics, a single unit Pritchard (1UP) is a measure of either mass, acceleration, electric current, elasticity, potential energy, lack of kinetic energy, explosive potential, carbonation, sublimation, or the degree to which a given object resembles a toaster. As it is such a flexible unit of measure, it has no equivalence, and can only be compared to other quantities of Pritchard units.

The Pritchard units contained in a new toaster approach infinity, especially as it sits still or is thrown off of a cliff.